JSTextTrackCueCustom.cpp [plain text]
#include "config.h"
#if ENABLE(VIDEO_TRACK)
#include "JSTextTrackCue.h"
#include "JSDataCue.h"
#include "JSTrackCustom.h"
#include "JSVTTCue.h"
#include "TextTrack.h"
namespace WebCore {
using namespace JSC;
bool JSTextTrackCueOwner::isReachableFromOpaqueRoots(JSC::Handle<JSC::Unknown> handle, void*, SlotVisitor& visitor, const char** reason)
{
JSTextTrackCue* jsTextTrackCue = jsCast<JSTextTrackCue*>(handle.slot()->asCell());
TextTrackCue& textTrackCue = jsTextTrackCue->wrapped();
if (textTrackCue.isFiringEventListeners()) {
if (UNLIKELY(reason))
*reason = "TextTrackCue is firing event listeners";
return true;
}
if (!textTrackCue.track())
return false;
if (UNLIKELY(reason))
*reason = "TextTrack is an opaque root";
return visitor.containsOpaqueRoot(root(textTrackCue.track()));
}
JSValue toJSNewlyCreated(JSGlobalObject*, JSDOMGlobalObject* globalObject, Ref<TextTrackCue>&& cue)
{
switch (cue->cueType()) {
case TextTrackCue::Data:
return createWrapper<DataCue>(globalObject, WTFMove(cue));
case TextTrackCue::WebVTT:
case TextTrackCue::ConvertedToWebVTT:
return createWrapper<VTTCue>(globalObject, WTFMove(cue));
case TextTrackCue::Generic:
return createWrapper<TextTrackCue>(globalObject, WTFMove(cue));
}
ASSERT_NOT_REACHED();
return jsNull();
}
JSValue toJS(JSGlobalObject* lexicalGlobalObject, JSDOMGlobalObject* globalObject, TextTrackCue& cue)
{
return wrap(lexicalGlobalObject, globalObject, cue);
}
void JSTextTrackCue::visitAdditionalChildren(SlotVisitor& visitor)
{
if (TextTrack* textTrack = wrapped().track())
visitor.addOpaqueRoot(root(textTrack));
}
}
#endif